I was watching a match that was being announced by Ken Shuman & he said that you must inform a player he's on two "when he returns to the table". The BCA rules state "between the 2nd & 3rd shot" I asked Ken about this and he said he's using the "world standardized rules" not BCA. I can't find the WSR's anywhere, can anyone confirm this ruling actually says this or if it is just his interpretation? I agree it should be when he returns but that's not what I've read.